/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:09:20,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:09:20,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:09:20,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:09:20,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:09:20,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:09:20,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:09:20,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:09:20,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:09:20,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:09:20,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:09:20,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:09:20,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:09:20,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:09:20,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:09:20,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:09:20,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:09:21,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:09:21,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:09:21,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:09:21,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:09:21,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:09:21,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:09:21,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:09:21,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:09:21,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:09:21,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:09:21,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:09:21,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:09:21,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:09:21,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:09:21,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:09:21,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:09:21,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:09:21,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:09:21,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:09:21,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:09:21,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:09:21,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:09:21,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:09:21,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:09:21,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 16:09:21,101 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:09:21,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:09:21,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:09:21,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:09:21,107 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:09:21,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:09:21,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:09:21,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:09:21,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:09:21,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:09:21,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:09:21,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:09:21,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:09:21,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:09:21,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:09:21,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:09:21,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:09:21,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:09:21,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:09:21,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:09:21,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:09:21,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:09:21,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:09:21,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:09:21,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:09:21,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:09:21,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:09:21,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:09:21,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:09:21,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:09:21,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:09:21,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:09:21,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:09:21,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:09:21,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:09:21,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-27 16:09:21,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a05b70ded/db14b9ae8f2e4f0ebd1de13199604b9d/FLAG2585b0987 [2020-10-27 16:09:22,788 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:09:22,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-27 16:09:22,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a05b70ded/db14b9ae8f2e4f0ebd1de13199604b9d/FLAG2585b0987 [2020-10-27 16:09:23,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a05b70ded/db14b9ae8f2e4f0ebd1de13199604b9d [2020-10-27 16:09:23,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:09:23,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:09:23,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:09:23,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:09:23,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:09:23,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:23" (1/1) ... [2020-10-27 16:09:23,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e389258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:23, skipping insertion in model container [2020-10-27 16:09:23,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:09:23" (1/1) ... [2020-10-27 16:09:23,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:09:23,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:09:25,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:09:25,554 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:09:26,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:09:26,973 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:09:26,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26 WrapperNode [2020-10-27 16:09:26,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:09:26,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:09:26,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:09:26,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:09:26,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:26,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... [2020-10-27 16:09:27,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:09:27,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:09:27,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:09:27,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:09:27,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:09:27,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:09:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:09:27,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-27 16:09:27,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-27 16:09:27,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-27 16:09:27,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:09:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:09:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-27 16:09:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:09:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:09:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:09:37,537 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:09:37,539 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:09:37,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:37 BoogieIcfgContainer [2020-10-27 16:09:37,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:09:37,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:09:37,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:09:37,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:09:37,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:09:23" (1/3) ... [2020-10-27 16:09:37,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d19464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:37, skipping insertion in model container [2020-10-27 16:09:37,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:09:26" (2/3) ... [2020-10-27 16:09:37,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d19464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:09:37, skipping insertion in model container [2020-10-27 16:09:37,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:09:37" (3/3) ... [2020-10-27 16:09:37,558 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label10.c [2020-10-27 16:09:37,571 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:09:37,582 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:09:37,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:09:37,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:09:37,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:09:37,654 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:09:37,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:09:37,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:09:37,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:09:37,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:09:37,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:09:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-27 16:09:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-27 16:09:37,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:09:37,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:09:37,879 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:09:37,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:09:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash -296581097, now seen corresponding path program 1 times [2020-10-27 16:09:37,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:09:37,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839740778] [2020-10-27 16:09:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:09:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:44,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:44,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-27 16:09:44,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-10-27 16:09:44,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 16:09:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:09:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1715 [2020-10-27 16:09:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 16:09:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:09:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:09:45,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:09:45,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:09:45,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:09:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:09:45,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 16:09:45,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:09:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:09:45,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:09:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:09:49,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839740778] [2020-10-27 16:09:49,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:09:49,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 16:09:49,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243457990] [2020-10-27 16:09:49,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 16:09:49,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:09:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 16:09:49,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 16:09:49,341 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-27 16:10:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:10:10,730 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-27 16:10:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:10:10,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1700 [2020-10-27 16:10:10,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:10:10,787 INFO L225 Difference]: With dead ends: 6315 [2020-10-27 16:10:10,788 INFO L226 Difference]: Without dead ends: 4025 [2020-10-27 16:10:10,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:10:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-27 16:10:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-27 16:10:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-27 16:10:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-27 16:10:11,057 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1700 [2020-10-27 16:10:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:10:11,062 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-27 16:10:11,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 16:10:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-27 16:10:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-27 16:10:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:10:11,381 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:10:11,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:10:11,382 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:10:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:10:11,383 INFO L82 PathProgramCache]: Analyzing trace with hash -905514989, now seen corresponding path program 1 times [2020-10-27 16:10:11,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:10:11,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402191068] [2020-10-27 16:10:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:10:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:16,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-27 16:10:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:10:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5216 [2020-10-27 16:10:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:10:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:10:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1712 [2020-10-27 16:10:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:10:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:10:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:18,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:18,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:10:18,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:10:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 16:10:18,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:10:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:10:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:10:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 16:10:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:10:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:18,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 16:10:18,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:10:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 16:10:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:10:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:10:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 16:10:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:10:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:10:21,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402191068] [2020-10-27 16:10:21,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:10:21,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:10:21,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613013331] [2020-10-27 16:10:21,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:10:21,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:10:21,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:10:21,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:10:21,323 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 5 states. [2020-10-27 16:10:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:10:44,586 INFO L93 Difference]: Finished difference Result 11577 states and 18835 transitions. [2020-10-27 16:10:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:10:44,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1709 [2020-10-27 16:10:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:10:44,639 INFO L225 Difference]: With dead ends: 11577 [2020-10-27 16:10:44,640 INFO L226 Difference]: Without dead ends: 7585 [2020-10-27 16:10:44,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:10:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7585 states. [2020-10-27 16:10:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7585 to 7538. [2020-10-27 16:10:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7538 states. [2020-10-27 16:10:44,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7538 states to 7538 states and 10590 transitions. [2020-10-27 16:10:44,907 INFO L78 Accepts]: Start accepts. Automaton has 7538 states and 10590 transitions. Word has length 1709 [2020-10-27 16:10:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:10:44,911 INFO L481 AbstractCegarLoop]: Abstraction has 7538 states and 10590 transitions. [2020-10-27 16:10:44,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:10:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 7538 states and 10590 transitions. [2020-10-27 16:10:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-27 16:10:44,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:10:44,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:10:44,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:10:44,962 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:10:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:10:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash 555644553, now seen corresponding path program 1 times [2020-10-27 16:10:44,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:10:44,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550621073] [2020-10-27 16:10:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:10:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:50,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1741 [2020-10-27 16:10:50,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:10:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-27 16:10:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:10:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 16:10:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1713 [2020-10-27 16:10:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:10:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:10:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:10:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:10:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:10:51,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:10:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:10:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:10:51,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:10:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:10:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:10:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:10:51,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:10:51,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:10:51,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 16:10:51,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:10:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:10:53,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550621073] [2020-10-27 16:10:53,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:10:53,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:10:53,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579780469] [2020-10-27 16:10:53,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:10:53,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:10:53,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:10:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:10:53,937 INFO L87 Difference]: Start difference. First operand 7538 states and 10590 transitions. Second operand 6 states. [2020-10-27 16:11:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:11:29,740 INFO L93 Difference]: Finished difference Result 22180 states and 33277 transitions. [2020-10-27 16:11:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:11:29,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1715 [2020-10-27 16:11:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:11:29,827 INFO L225 Difference]: With dead ends: 22180 [2020-10-27 16:11:29,827 INFO L226 Difference]: Without dead ends: 14648 [2020-10-27 16:11:29,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:11:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14648 states. [2020-10-27 16:11:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14648 to 14617. [2020-10-27 16:11:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14617 states. [2020-10-27 16:11:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14617 states to 14617 states and 19596 transitions. [2020-10-27 16:11:30,296 INFO L78 Accepts]: Start accepts. Automaton has 14617 states and 19596 transitions. Word has length 1715 [2020-10-27 16:11:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:11:30,302 INFO L481 AbstractCegarLoop]: Abstraction has 14617 states and 19596 transitions. [2020-10-27 16:11:30,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:11:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 14617 states and 19596 transitions. [2020-10-27 16:11:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-27 16:11:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:11:30,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:11:30,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:11:30,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:11:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:11:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash 666451480, now seen corresponding path program 1 times [2020-10-27 16:11:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:11:30,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99234711] [2020-10-27 16:11:30,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:11:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:35,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:35,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-27 16:11:35,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:11:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 16:11:35,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:11:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-27 16:11:35,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1712 [2020-10-27 16:11:35,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:11:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:11:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:36,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:11:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:11:36,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:11:36,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:11:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:11:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:11:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:11:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:11:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:11:36,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:11:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:11:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:11:39,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99234711] [2020-10-27 16:11:39,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:11:39,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:11:39,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455356218] [2020-10-27 16:11:39,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:11:39,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:11:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:11:39,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:11:39,575 INFO L87 Difference]: Start difference. First operand 14617 states and 19596 transitions. Second operand 5 states. [2020-10-27 16:12:02,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:12:02,855 INFO L93 Difference]: Finished difference Result 32772 states and 45426 transitions. [2020-10-27 16:12:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:12:02,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1722 [2020-10-27 16:12:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:12:02,923 INFO L225 Difference]: With dead ends: 32772 [2020-10-27 16:12:02,924 INFO L226 Difference]: Without dead ends: 18161 [2020-10-27 16:12:02,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:12:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18161 states. [2020-10-27 16:12:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18161 to 18133. [2020-10-27 16:12:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18133 states. [2020-10-27 16:12:03,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18133 states to 18133 states and 23834 transitions. [2020-10-27 16:12:03,385 INFO L78 Accepts]: Start accepts. Automaton has 18133 states and 23834 transitions. Word has length 1722 [2020-10-27 16:12:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:12:03,388 INFO L481 AbstractCegarLoop]: Abstraction has 18133 states and 23834 transitions. [2020-10-27 16:12:03,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:12:03,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18133 states and 23834 transitions. [2020-10-27 16:12:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2020-10-27 16:12:03,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:12:03,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:12:03,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:12:03,478 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:12:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:12:03,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1307232401, now seen corresponding path program 1 times [2020-10-27 16:12:03,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:12:03,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921028094] [2020-10-27 16:12:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:12:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:03,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:08,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1764 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1713 [2020-10-27 16:12:08,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:12:09,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:12:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:09,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:09,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:12:09,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:12:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:12:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:12:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:09,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:12:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:12:09,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 16:12:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:12:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:12:12,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921028094] [2020-10-27 16:12:12,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:12:12,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:12:12,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880660536] [2020-10-27 16:12:12,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:12:12,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:12:12,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:12:12,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:12:12,949 INFO L87 Difference]: Start difference. First operand 18133 states and 23834 transitions. Second operand 6 states. [2020-10-27 16:12:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:12:49,912 INFO L93 Difference]: Finished difference Result 71451 states and 97538 transitions. [2020-10-27 16:12:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:12:49,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1738 [2020-10-27 16:12:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:12:50,111 INFO L225 Difference]: With dead ends: 71451 [2020-10-27 16:12:50,111 INFO L226 Difference]: Without dead ends: 53324 [2020-10-27 16:12:50,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:12:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53324 states. [2020-10-27 16:12:51,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53324 to 53256. [2020-10-27 16:12:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53256 states. [2020-10-27 16:12:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53256 states to 53256 states and 67490 transitions. [2020-10-27 16:12:51,459 INFO L78 Accepts]: Start accepts. Automaton has 53256 states and 67490 transitions. Word has length 1738 [2020-10-27 16:12:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:12:51,461 INFO L481 AbstractCegarLoop]: Abstraction has 53256 states and 67490 transitions. [2020-10-27 16:12:51,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:12:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 53256 states and 67490 transitions. [2020-10-27 16:12:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2020-10-27 16:12:51,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:12:51,607 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:12:51,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:12:51,607 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:12:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:12:51,608 INFO L82 PathProgramCache]: Analyzing trace with hash -594679388, now seen corresponding path program 1 times [2020-10-27 16:12:51,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:12:51,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308299049] [2020-10-27 16:12:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:12:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:12:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:51,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:12:56,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:12:56,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1768 [2020-10-27 16:12:56,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:12:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 16:12:56,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:12:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 16:12:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 16:12:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1306 [2020-10-27 16:12:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:12:59,317 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-27 16:12:59,837 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33